Lens View Angle Guide For Covert Cameras

The Range In This Catalogue

The DVR-720PNC pen sees 50 degrees. The DVR-1080PVC pen sees 60. The DVR-1080PDC desk clock sees 65, the DVR-1080DKC 75, and the WF-1080ULC and WF-1080HKC 90. The WF-720MCN magnetic camera sees 130, the WF-1080OKC 140, the WF-1080SAC 160, the WF-1080WCL 175 and the WF-360MOC ceiling camera 185.

Narrow Angles Are For Subjects Not Rooms

A 50 to 65 degree lens frames a person, a doorway or a counter. That is what you want on a pen or a body worn unit where the wearer aims the camera by facing the subject. Put the same lens on a shelf and it covers a third of the room.

Ninety Degrees Is The Practical Middle

A 90 degree lens covers a desk and its approach, or a doorway and the wall beside it, with little distortion. The WF-1080ULC desk lamp and the WF-1080HKC clothes hook both sit here, which is why they suit offices and hallways.

Wide Angles Buy Coverage And Cost Detail

At 160 to 185 degrees a whole room fits in frame, but the same number of pixels is spread across it. A face at four metres in a 175 degree frame carries far fewer pixels than the same face in a 65 degree frame. Barrel distortion also bends straight lines near the edges. Use wide when you need to know something happened; use narrow when you need to know who.

Fisheye Plus Dewarping Is A Different Tool

The WF-360MOC and the bulb cameras produce a circular image that the app straightens into usable views. That works well from a ceiling looking down and poorly from a shelf looking across. Fisheye is a ceiling solution.